title: Image of the month: “butterfly” effect, or mirror image, caused by a coiled esophageal manometry catheter.
authors.forename: Jasmine
authors.initials: J
authors.lastname: Zia
authors.forename: Joel H
authors.initials: JH
authors.lastname: Rubenstein
mesh_terms: D016477:Artifacts; D003680:Deglutition Disorders / Q000175:diagnosis*; D006801:Humans; D008297:Male; D008365:Manometry / Q000295:instrumentation / Q000379:methods; D008875:Middle Aged